Across
- 3. The toxic gas leaving your body after you breath out.
- 12. The color that is used to represent oxygen-rich blood.
- 13. They deliver oxygen and collect waste in the body.
- 14. Pumps blood throughout your body.
- 16. Pumps blood out of the heart.
- 17. The organ system that contains the heart.
- 18. Transported by red blood cells and stored in the lungs.
- 19. The thing that makes red blood cells (it is watery).
- 20. The amount of times your heart beats per minute.
Down
- 1. The arteries divide to become smaller and smaller tubes called ....
- 2. Helps you breath and give oxygen to red blood cells.
- 4. What makes up organs and other things in the body.
- 5. Makes up all living things.
- 6. Patrol the body and help fight viruses.
- 7. Receives blood.
- 8. ______ between the chambers keep blood from going the wrong way.
- 9. Oxygen rich blood that is pumped away from the heart.
- 10. Helps to transport blood.
- 11. The heart pumps the oxygen-rich blood through the main artery, which is the answer to this question.
- 15. A stream of red blood cells.